Here are the patches to prevent the game from changing ASCII into fullwidth characters.
Grab your hex editor.

For Wizards Climber:
In the file AGS.DLL:
At address 18175, replace 74 with EB

For Suzukuri Dragon:
In the file AGS.DLL:
At address 17647, replace 74 with EB  (for version 1.00 only)
At address 17677, replace 74 with EB  (for version 1.02)

For Shinobiryuu:
In the file AGS.DLL:
At address 11FDE, replace 74 with EB

For Bunny Black:  (with update 1.11)
In the file PgsvTd.dll
At address 19B10, replace 74 with EB

For Bunny Black 2:  (with update 1.02)
In the file PgsvTd.dll
At address 6C3E, replace 74 with EB
